#region license
// Copyright (c) 2003, 2004, 2005 Rodrigo B. de Oliveira (rbo@acm.org)
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
// 
//     * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//     * Neither the name of Rodrigo B. de Oliveira nor the names of its
//     contributors may be used to endorse or promote products derived from this
//     software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion

namespace Milo.Compilation.TypeSystem
{
	using System;
	using System.Collections.Generic;

	public class ExternalGenericTypeDefinitionInfo : AbstractExternalGenericDefinitionInfo, IGenericTypeDefinitionInfo
	{
		private ExternalType _type;

		public ExternalGenericTypeDefinitionInfo(TypeSystemServices tss, ExternalType type) : base(tss)
		{	
			_type = type;
		}

		public IType MakeGenericType(IType[] arguments)
		{
			return (IType)MakeGenericEntity(arguments);
		}

		protected override Type[] GetActualGenericParameters()
		{
			return _type.ActualType.GetGenericArguments();
		}
		
		protected override IEntity MakeExternalEntity(Type[] arguments)
		{
			return _tss.Map(_type.ActualType.MakeGenericType(arguments));
		}
		
		protected override IEntity MakeMixedEntity(IType[] arguments)
		{
			ExternalCallableType callable = _type as ExternalCallableType;
			if (null != callable)
			{
				return new MixedGenericCallableType(_tss, callable, arguments);
			}
			else
			{
				return new MixedGenericType(_tss, _type, arguments);
			}
		}
	}
}
